// Metawidget
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

package org.jk.myjobs.utils;

import java.util.Collection;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.ConverterException;

import org.metawidget.util.CollectionUtils;

/**
 * Converts Collections to (but not from) a String representation.
 *
 * @author Richard Kennard
 */

public class CollectionConverter
        implements Converter {

    //
    // Public methods
    //

    public Object getAsObject(FacesContext context, UIComponent component, String value)
            throws ConverterException {

        throw new UnsupportedOperationException();
    }

    public String getAsString(FacesContext context, UIComponent component, Object value)
            throws ConverterException {

        return CollectionUtils.toString((Collection<?>) value, ", ", false, false);
    }
}
